| 摘要 |
PURPOSE:To provide a heat-shrinkable polyester film which is excellent in transparency, heat resistance, mechanical strengths and chemical resistance, is less problematic in the tendency to form a noxious gas or to damage a combustion furnace when it is burnt in waste disposal and is prevented from being unevenly shrunk or from forming pocky wrinkles when shrunk by heating. CONSTITUTION:A heat-shrinkable polyester film is prepared by molding a composition comprising a polyethylene terephthalate polymer with 5-30wt.% polyester elastomer having a glass transition temperature (Tg) lower than that of the polyethylene terephthalate polymer. |
